Siemens Hicom 150 E Office Service Manual page 220

Hicom 150 E Office Rel.1.0 Service Manual - 12 Cordless Multicell Integration CMI
- Stairwells,
- lift shafts and
- supply shafts
in these buildings usually have heavily reinforced cement walls and stairs. Additional
BSs are required for areas such as these with poor propagation conditions.
- If additional BSs are required because of a large number of mobile telephones, please refer to
Figure 12-8.
For interiors with concrete and steel dividing walls
- Horizontal direction
Due to the relatively high attenuation of concrete and steel dividing walls, a BS must be
installed in these buildings at least every 25 m.
- Central installation in the building
Taking into consideration the general rules.
- Vertical coverage
It must be ensured that no more than one reinforced concrete ceiling is in the direct propagation
route between the BS and the movement area of the mobile telephones. Otherwise adequate
coverage is not guaranteed. Additional BSs are also required for
- stairwells,
- lift shafts and
- supply shafts
In the case of lifts, a BS can be installed in the lift cabin itself.
- If additional BSs are needed because of a large number of mobile telephones, please refer to
Figure 12-9.
BS arrangement: reinforced concrete building with interiors of brick/lightweight materials
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(Figure 12-9)